how to determine which button is pressed?

lore_flo · 18th May 2007, 17:45

How can I detect if the user has pressed the next / back / cancel button? can I change the actions executed ?

Thanks.

Afrow UK · 18th May 2007, 18:23

The page Leave function is only executed when the user clicks the Next button.

Stu

lore_flo · 21st May 2007, 13:29

Ok, and if the user click the back function? Or he selects cancel ? there are perhaps equivalent functions (next button --> leave Function, back --> start function (for example?))?
In my mask I have some mandatory fields. When the user clicks the next button, I test if the fields are empty: if so, using a Goto instruction, I return to the correspondent label, at the beginning of the function. But if the user clicks the "Back" or the "cancel" options, how to detect it?
if he choose "back" I would return to the previous page, if he choose cancel I woul abort the installation. thanks

Comperio · 21st May 2007, 14:17

If the user clicks 'back', then then install will go back to the previous page (no additional programming necessary).

Assuming that your page is a custom page, you can (in your page's show function) pop a value off the stack to indicate which button was pressed. The value returned with be either "back", "success", "cancel" or "error". (See the InstallOptions docs for more info.)

In addition, if the user presses cancel, then the .onUserAbort function would be executed. If you call "abort" in that function, the cancel will be aborted. (This would be a way for you to intercept the user's cancel request, if desired.)

18th May 2007, 17:45	#1
lore_flo Junior Member Join Date: May 2007 Posts: 6	how to determine which button is pressed? How can I detect if the user has pressed the next / back / cancel button? can I change the actions executed ? Thanks.

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18th May 2007, 18:23	#2
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	The page Leave function is only executed when the user clicks the Next button. Stu

21st May 2007, 13:29	#3
lore_flo Junior Member Join Date: May 2007 Posts: 6	Ok, and if the user click the back function? Or he selects cancel ? there are perhaps equivalent functions (next button --> leave Function, back --> start function (for example?))? In my mask I have some mandatory fields. When the user clicks the next button, I test if the fields are empty: if so, using a Goto instruction, I return to the correspondent label, at the beginning of the function. But if the user clicks the "Back" or the "cancel" options, how to detect it? if he choose "back" I would return to the previous page, if he choose cancel I woul abort the installation. thanks

21st May 2007, 14:17	#4
Comperio Major Dude Join Date: Jan 2005 Location: Oregon Coast Posts: 737	If the user clicks 'back', then then install will go back to the previous page (no additional programming necessary). Assuming that your page is a custom page, you can (in your page's show function) pop a value off the stack to indicate which button was pressed. The value returned with be either "back", "success", "cancel" or "error". (See the InstallOptions docs for more info.) In addition, if the user presses cancel, then the .onUserAbort function would be executed. If you call "abort" in that function, the cancel will be aborted. (This would be a way for you to intercept the user's cancel request, if desired.)